A liquid chromatography chip with a material that prevents charge buildup

    公开(公告)号:GB2436468A

    公开(公告)日:2007-09-26

    申请号:GB0705640

    申请日:2007-03-23

    Abstract: An analytical system has a separating system such as HPLC or electrophoresis, and a liquid chromatography chip in fluid communication with the separating system. The liquid chromatography chip has an emitter with a tip that includes a metal, a metal coating, a hydrophobic material or a hydrophobic coating that prevents charge buildup on the emitter surface when electrospraying from the chip. The analytical system is used in conjunction with a mass spectrometer.

    SAMPLE INJECTOR WITH METERING DEVICE BALANCING PRESSURE DIFFERENCES IN AN INTERMEDIATE VALVE STATE

    公开(公告)号:CA2764047C

    公开(公告)日:2016-12-13

    申请号:CA2764047

    申请日:2009-06-03

    Abstract: A sample injector (200) for use in a fluid separation system (10) for separating compounds of a fluidic sample in a mobile phase, the sample injector (200) comprising a switchable valve (202), a sample loop (204) in fluid communication with the valve (202) and configured for receiving the fluidic sample, a metering device (206) in fluid communication with the sample loop (204) and configured for introducing a metered amount of the fluidic sample on the sample loop (204), and a control unit (208) configured forcontrolling switching of the valve (202) to transfer the sample loop (204) between a low pressure state and a high pressure state via an intermediate state and for controlling the metering device (206) during the intermediate state to at least partially equilibrate a pressure difference in the sample loop (204) between the low pressure state and the high pressure state.

    SAMPLE INJECTOR WITH METERING DEVICE BALANCING PRESSURE DIFFERENCES IN AN INTERMEDIATE VALVE STATE

    公开(公告)号:CA2764047A1

    公开(公告)日:2010-12-09

    申请号:CA2764047

    申请日:2009-06-03

    Abstract: A sample injector (200) for use in a fluid separation system (10) for separating compounds of a fluidic sample in a mobile phase, the sample injector (200) comprising a switchable valve (202), a sample loop (204) in fluid communication with the valve (202) and configured for receiving the fluidic sample, a metering device (206) in fluid communication with the sample loop (204) and configured for introducing a metered amount of the fluidic sample on the sample loop (204), and a control unit (208) configured forcontrolling switching of the valve (202) to transfer the sample loop (204) between a low pressure state and a high pressure state via an intermediate state and for controlling the metering device (206) during the intermediate state to at least partially equilibrate a pressure difference in the sample loop (204) between the low pressure state and the high pressure state.

    Sample injector with metering device balancing pressure differences in an intermediate valve state

    公开(公告)号:AU2009347432B2

    公开(公告)日:2015-01-29

    申请号:AU2009347432

    申请日:2009-06-03

    Abstract: A sample injector (200) for use in a fluid separation system (10) for separating compounds of a fluidic sample in a mobile phase, the sample injector (200) comprising a switchable valve (202), a sample loop (204) in fluid communication with the valve (202) and configured for receiving the fluidic sample, a metering device (206) in fluid communication with the sample loop (204) and configured for introducing a metered amount of the fluidic sample on the sample loop (204), and a control unit (208) configured forcontrolling switching of the valve (202) to transfer the sample loop (204) between a low pressure state and a high pressure state via an intermediate state and for controlling the metering device (206) during the intermediate state to at least partially equilibrate a pressure difference in the sample loop (204) between the low pressure state and the high pressure state.

    7.
    发明专利
    未知

    公开(公告)号:DE102007013579A1

    公开(公告)日:2007-09-27

    申请号:DE102007013579

    申请日:2007-03-21

    Abstract: The invention provides an analytical system having a separating system and a liquid chromatography chip. The liquid chromatography chip has an emitter that includes a material that prevents charge buildup on the emitter surface. Methods of using the analytical system, chip and emitter are also disclosed.

    8.
    发明专利
    未知

    公开(公告)号:DE50111054D1

    公开(公告)日:2006-11-02

    申请号:DE50111054

    申请日:2001-12-21

    Abstract: The method involves recording a reference time development of the pressure by using a pressure measuring device (26). A time measurement of the operating pressure corresponding to an operating volume stream through an operation channel is calculated. The fluid (34) is delivered through the operating channel (33), utilizing the time development of the pressure (38) when desired work process is performed.

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